She was beginning to see that he felt her constitutional inability to understand anything about money as the deepest difference between them. It was a proficiency no one had ever expected her to acquire, and the lack of which she had even been encouraged to regard as a grace and to use as a pretext. During the interval between her divorce and her remarriage she had learned what things cost, but not how to do without them; and money still seemed to her like some mysterious and uncertain stream which occasionally vanished underground but was sure to bubble up again at one’s feet.